CN109307037B

CN109307037B - Automobile shock absorption system

Info

Publication number: CN109307037B
Application number: CN201811371306.2A
Authority: CN
Inventors: 刘山平; 屈贤; 刘力
Original assignee: Lin Piaopiao
Current assignee: Lin Piaopiao
Priority date: 2018-11-18
Filing date: 2018-11-18
Publication date: 2020-05-29
Anticipated expiration: 2038-11-18
Also published as: CN109307037A

Abstract

The invention discloses an automobile shock absorption system which comprises an automobile chassis, wherein the bottom of the automobile chassis is fixedly connected with a supporting block, two sides of the supporting block are respectively provided with a supporting groove, the upper side and the lower side of the inner wall of each supporting groove are respectively and fixedly connected with a guide rod, the surface of each guide rod is sleeved with a swinging rod, and one side of each swinging rod, far away from the supporting block, is fixedly connected with a wheel; a magneto-rheological damper is arranged between the automobile chassis and the swing rod; the magnetorheological damper comprises a working cylinder, wherein the bottom end of the working cylinder is provided with a lower mounting ring through welding, the inner wall of the working cylinder is provided with an oil storage chamber, a through hole is formed between the bottom end of the working cylinder and the bottom end of the oil storage chamber, a piston assembly is arranged in the working cylinder, both ends of the outer side of the working cylinder are sleeved with mounting seats through glue, and the middle part of the outer side of the working cylinder is sleeved with a rubber sleeve through glue; the outer surface of the working cylinder is provided with a wear-resistant coating; the invention has scientific and reasonable structure, safe and convenient use and better shock absorption effect.

Description

Automobile shock absorption system

Technical Field

The invention relates to the technical field of automobiles, in particular to an automobile damping system.

Background

The existing automobile damping system of the automobile has poor damping effect, and generates strong jolt when the automobile runs on an uneven road surface, thereby influencing the operating performance of the automobile. In order to improve the damping performance of automobiles, the application of the magnetorheological damper is more and more extensive at present. The magneto-rheological shock absorber utilizes electromagnetic reaction, takes input information from a sensor for monitoring the motion of a vehicle body and wheels as a basis, and makes real-time response to road conditions and driving environment, the magneto-rheological liquid is magnetic soft particle suspension, when an electromagnetic coil arranged in a shock absorber piston is electrified, the magnetic field of the coil changes the rheological property of the magneto-rheological liquid, so that under the conditions of no electromechanical control valve and simple mechanical device, the magneto-rheological shock absorber generates damping force with quick response and strong controllability, has the characteristics of high damping force adjustable multiple, easy realization of computer variable damping real-time control, compact structure and small external input energy, and is increasingly paid high attention to in the engineering field.

However, the magnetorheological damper has the following disadvantages when in use: when the electromagnetic damper is used, when the current amount in the electromagnetic coil is small and a large magnetic field cannot be generated to influence magnetorheological fluid, the damping effect of the damper is reduced, and under the condition of large vibration, the damper cannot be used for damping, so that the vehicle jolts greatly and the riding experience is influenced; in addition, when the shock absorber is used, the outer side of the limiting pipe is stained with dust, so that the phenomenon of blocking occurs in the shock absorption process, and the shock absorption cannot be carried out; when the shock absorber is placed, the shock absorber can be directly contacted with the ground, the shock absorber can be damaged, and the normal use of the shock absorber is influenced; when the shock absorber works, the shock absorber can do reciprocating piston motion, and can generate larger heat, so that the service life of the shock absorber is influenced; in addition, the outer surface of the working cylinder is not provided with a protective coating, so that the ageing resistance and the wear resistance of the working cylinder are relatively poor, and the service life of the working cylinder is shortened.

Disclosure of Invention

The invention provides an automobile shock absorption system which can effectively solve the technical problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an automobile shock absorption system comprises an automobile chassis, wherein the bottom of the automobile chassis is fixedly connected with a supporting block, supporting grooves are formed in two sides of the supporting block, guide rods are fixedly connected to the upper side and the lower side of the inner wall of each supporting groove, a swinging rod is sleeved on the surface of each guide rod, and a wheel is fixedly connected to one side, far away from the supporting block, of each swinging rod; a magnetorheological damper is arranged between the automobile chassis and the swinging rod;

the magnetorheological damper comprises a working cylinder, a lower mounting ring is installed at the bottom end of the working cylinder through welding, an oil storage chamber is formed in the inner wall of the working cylinder, a through hole is formed between the bottom end of the working cylinder and the bottom end of the oil storage chamber, and a bottom valve seat is installed at the bottom end inside the working cylinder through welding;

the piston assembly is arranged in the working cylinder and comprises a piston, a sealing rubber ring, an electromagnetic coil, a flow guide hole, an adjusting groove, an elastic bag and an adjusting hole, the sealing rubber ring is embedded and arranged on the outer side of the piston, the sealing rubber ring is connected with the inner wall of the working cylinder in a clamping manner, the electromagnetic coil is embedded and arranged on the edge of the inner part of the piston, the flow guide holes are formed in the outer side of the middle part of the piston at equal intervals, the adjusting groove is formed in the bottom end of one side of the flow guide hole, the elastic bag is attached to the inner wall of the adjusting groove, the adjusting hole is formed between the flow guide hole and;

the outer surface of the working cylinder (1) is provided with a wear-resistant coating;

the wear-resistant coating is formed by spraying wear-resistant paint, and the wear-resistant paint comprises the following components in parts by mass: 50 parts of modified epoxy resin emulsion, 12 parts of terpene resin, 7 parts of polyurethane resin, 10 parts of nano amorphous silicon nitride powder, 13 parts of inorganic filler, 20 parts of organic solvent, 2.6 parts of film-forming assistant, 1.6 parts of flatting agent, 0.6 part of surfactant and 0.5 part of defoaming agent;

the preparation method of the modified epoxy resin comprises the following steps: weighing 2, 4-dihydroxy benzophenone with the mass of 10 percent of the epoxy resin emulsion, dissolving the 2, 4-dihydroxy benzophenone in ethyl acetate, heating to 45 ℃, and ultrasonically stirring for 35min to obtain a mixed component; transferring the mixed components into epoxy resin emulsion under the protection of nitrogen, adding polyethylene glycol 200 accounting for 4.0% of the epoxy resin emulsion and benzoyl peroxide accounting for 4.5% of the epoxy resin emulsion by mass respectively, performing ultrasonic dispersion for 25min, and performing constant-temperature reaction for 170min at the temperature of 55 ℃; and then the ethyl acetate is recovered through reduced pressure distillation, and the modified epoxy resin emulsion is obtained.

Preferably, the seat of laying is all cup jointed through glue at working cylinder outside both ends, the rubber sleeve is cup jointed through glue in the middle part of the working cylinder outside, rubber sleeve outside equidistance leaves the chisel and has anti-skidding line.

Preferably, the semiconductor refrigeration piece is installed on the inner side of the rubber sleeve through a fixing screw.

Preferably, reserve damper assembly is installed to piston rod one end, reserve damper assembly includes spacing pipe, spacing dish, first damping spring and second damping spring, the welding of piston rod one end has spacing dish, spacing dish has cup jointed spacing pipe in the outside, first damping spring is installed on spacing dish top, second damping spring is installed to spacing dish bottom.

Preferably, the collar is installed through the welding to spacing pipe top, lubricating component is installed to the working cylinder top, lubricating component includes lubricated seat, lubricated cavity, oil absorption sponge ring, oil seepage hole and oil inlet, pass through welded connection between working cylinder and the lubricated seat, lubricated cavity has been seted up to lubricated seat inside, the oil seepage hole has been seted up to lubricated cavity inboard, the laminating of oil seepage hole one side has the oil absorption sponge ring, the oil inlet has been seted up to lubricated seat top, semiconductor refrigeration piece and solenoid's input all with the output electric connection of power.

Preferably, the limiting disc and the first damping spring and the limiting disc and the second damping spring are fixedly connected through spring fixing seats.

Preferably, the working cylinder is filled with magnetorheological fluid.

Preferably, the outer diameter of the limiting disc is equal to the inner diameter of the limiting pipe.

Preferably, the outer diameter of the sealing rubber ring is equal to the inner diameter of the working cylinder.

Preferably, the damping force of the first and second damping springs is greater than the damping force of the magnetorheological fluid under the condition of the magnetic field.

Preferably, the inorganic filler is formed by mixing nano calcium carbonate, alumina and gas-phase nano silicon dioxide according to a mass ratio of 2:1: 2; the organic solvent is formed by mixing turpentine, ethyl acetate and xylene according to the mass ratio of 2:5: 1; the film-forming additive is alcohol ester twelve; the leveling agent is polyether modified polysiloxane; the surfactant is alkylphenol ethoxylates; the defoaming agent is an organic silicon defoaming agent.

Compared with the prior art, the invention has the following beneficial effects:

1. magnetorheological damper is provided with piston assembly, get into the regulation inslot through magnetorheological suspensions, cause the extrusion to the elasticity bag, make the elasticity bag get into water conservancy diversion downthehole portion through the regulation hole extrusion, can adjust the size in water conservancy diversion hole, can improve the shock attenuation effect of bumper shock absorber effectively, can be according to the vibrations size and the range size of piston motion of the vehicle in-process of actually traveling, adjust the water conservancy diversion hole, can realize adjusting the hardness of bumper shock absorber, make the suitability of bumper shock absorber stronger, the shock attenuation effect is better.

2. The outer surface of the working cylinder of the magnetorheological damper is provided with the wear-resistant coating, the wear-resistant coating formed by the wear-resistant coating has excellent aging resistance and wear resistance, the adhesive force of the wear-resistant coating is greatly enhanced, and the service life of the working cylinder is effectively prolonged.

3. The magnetorheological damper is provided with a lubricating assembly, lubricating oil in the lubricating cavity is absorbed through the oil absorption sponge ring, the lubricating oil is smeared outside the limiting pipe through the oil penetration hole, when the limiting pipe does piston motion inside the working cylinder, the phenomenon of blocking caused by overlarge surface friction of the limiting pipe can be effectively prevented, the damper is smooth and easy in the use process, the vehicle is stable in the use process, and the riding comfort is improved.

4. The magnetorheological damper is provided with a standby damping component, when a vehicle runs and the generated vibration pressure is greater than the damping force of the magnetorheological fluid in a magnetic field, secondary damping can be performed on the vehicle through the first damping spring and the second damping spring, the phenomenon that the vibration pressure is too large, and the magnetorheological fluid cannot damp the vehicle, so that the vehicle jolts seriously, and the service life of the damper is prolonged.

5. Magnetorheological damper is provided with the rubber sleeve, anti-skidding line and lays the seat, through rubber sleeve and anti-skidding line, when carrying the bumper shock absorber, can prevent effectively that bumper shock absorber surface friction is less, lead to the bumper shock absorber to take place to drop and damage, simultaneously, more comfortable when carrying the bumper shock absorber winter, through laying the seat, can avoid placing the bumper shock absorber effectively, the bumper shock absorber directly takes place to contact with ground, lead to the bumper shock absorber to receive to collide with and damage.

6. The magnetorheological damper is provided with the semiconductor refrigeration piece, and the heat that produces in the shock absorber working process is dispelled the heat through the low temperature that the semiconductor refrigeration piece produced, prevents that the inside heat of shock absorber from too high leading to the shock absorber phenomenon that bursts to appear, has prolonged the life of shock absorber.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the magnetorheological damper of the present invention;

FIG. 3 is a schematic view of the construction of the interior of the cylinder of the present invention;

FIG. 4 is a schematic view of the mounting structure of the alternate shock assembly of the present invention;

FIG. 5 is a schematic view of the mounting structure of the piston assembly of the present invention;

FIG. 6 is a schematic structural view of the lubrication assembly of the present invention;

FIG. 7 is a schematic view of the mounting structure of the semiconductor chilling plate of the present invention;

reference numbers in the figures: 1. a working cylinder; 2. a lower mounting ring; 3. an oil storage chamber; 4. a through hole; 5. a base valve seat; 6. a placing seat; 7. a rubber sleeve; 8. a semiconductor refrigeration sheet; 9. anti-skid lines; 10. a piston assembly; 1001. a piston; 1002. sealing the rubber ring; 1003. an electromagnetic coil; 1004. a flow guide hole; 1005. an adjustment groove; 1006. an elastic bag; 1007. an adjustment hole; 11. a piston rod; 12. a standby shock-absorbing component; 1201. a limiting pipe; 1202. a limiting disc; 1203. a first damping spring; 1204. a second damping spring; 13. an upper mounting ring; 14. a lubrication assembly; 1401. a lubrication seat; 1402. a lubrication chamber; 1403. an oil absorbing sponge ring; 1404. an oil-bleeding hole; 1405. an oil inlet; 15. an automotive chassis; 1501. a support block; 1502. a support groove; 1503. a guide bar; 16. a swing lever; 17. and (7) wheels.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1 to 7, the automobile shock absorption system provided by this embodiment includes an automobile chassis 15, a supporting block 1501 is fixedly connected to the bottom of the automobile chassis 15, supporting grooves 1502 are respectively formed on both sides of the supporting block 1501, guide rods 1503 are respectively fixedly connected to both upper and lower sides of an inner wall of each supporting groove 1502, a swing rod 16 is sleeved on a surface of each guide rod 1503, and a wheel 17 is fixedly connected to one side of each swing rod 16, which is far away from the supporting block 1501; and a magneto-rheological shock absorber is arranged between the automobile chassis 15 and the swinging rod 16.

The magnetorheological damper comprises a working cylinder 1, in order to damp vibration generated in the driving process of a vehicle through the characteristics of the magnetorheological fluid, the magnetorheological fluid is filled in the working cylinder 1, a lower mounting ring 2 (the lower mounting ring 2 is connected with a swinging rod 16) is installed at the bottom end of the working cylinder 1 through welding, an oil storage chamber 3 is formed in the inner wall of the working cylinder 1, a through hole 4 is formed between the bottom end of the working cylinder 1 and the bottom end of the oil storage chamber 3, a base valve seat 5 is installed at the bottom end of the inner part of the working cylinder 1 through welding, in order to prevent the phenomenon of skidding in the process of carrying and mounting the damper, the damper is more comfortable and cannot be frozen in winter when being mounted and dismounted, mounting seats 6 are respectively installed at the two ends of the outer side of the working cylinder 1 through glue in a sleeved mode, a rubber sleeve 7 is installed at the middle part of the outer side of the, in order to reduce the heat generated by friction during the operation of the shock absorber and prolong the service life of the shock absorber, the semiconductor refrigerating sheet 8 is installed on the inner side of the rubber sleeve 7 through a fixing screw, and the model of the semiconductor refrigerating sheet 8 is TEC-12705.

1 internally mounted of working cylinder has piston assembly 10, piston assembly 10 includes piston 1001, sealing rubber ring 1002, solenoid 1003, water conservancy diversion hole 1004, adjustment tank 1005, elasticity bag 1006 and regulation hole 1007, sealing rubber ring 1002 is installed in the embedding of piston 1001 outside, be connected through the block between sealing rubber ring 1002 and the working cylinder 1 inner wall, solenoid 1003 is installed in the embedding of the inside limit portion of piston 1001, water conservancy diversion hole 1004 has been seted up to piston 1001 middle part outside equidistance, adjustment tank 1005 has been seted up to water conservancy diversion hole 1004 one side bottom, the flexible bag 1006 of the laminating of adjustment tank 1005 inner wall, adjustment hole 1007 has been seted up between water conservancy diversion hole 1004 and the adjustment tank 1005, piston 1001 top mid-weld has piston rod 11.

When the vibration pressure is too large and the magnetorheological fluid cannot absorb the generated vibration, a good damping effect can be achieved through the spare damping assembly 12, the spare damping assembly 12 is installed at one end of the piston rod 11, the spare damping assembly 12 comprises a limiting pipe 1201, a limiting disc 1202, a first damping spring 1203 and a second damping spring 1204, the limiting disc 1202 is welded at one end of the piston rod 11, in order to prevent the piston rod 11 from moving left and right inside the limiting pipe 1201 and causing damage of the damper, the outer diameter of the limiting disc 1202 is equal to the inner diameter of the limiting pipe 1201, the limiting pipe 1201 is sleeved outside the limiting disc 1202, in order to enable the limiting pipe 1201 to move up and down inside the working cylinder 1 and prevent the damper from being damaged due to left and right displacement, the outer diameter of the sealing rubber ring 1002 is equal to the inner diameter of the working cylinder 1, the first damping spring 1203 is installed at the top end of the limiting disc 1202, the second damping spring 1204 is, in order to enable the fixed connection between the limiting disc 1202 and the first damping spring 1203 and between the limiting disc 1202 and the second damping spring 1204 to be more stable, the fixed connection between the limiting disc 1202 and the first damping spring 1203 and the fixed connection between the limiting disc 1202 and the second damping spring 1204 are both fixed through spring fixing seats, when the damping force of the magnetorheological fluid cannot absorb the vibration in the driving process of the automobile, the vibration generated in the driving process of the automobile can be absorbed through the first damping spring 1203 and the second damping spring 1204, and the damping force of the first damping spring 1203 and the second damping spring 1204 is larger than the damping force of the magnetorheological fluid under the magnetic field condition.

In order to lubricate the limiting tube 1201, the phenomenon of jamming in the process of motion of the piston 1001 is prevented, the normal damping effect of the shock absorber is affected, the top end of the limiting tube 1201 is provided with an upper mounting ring 13 (the upper mounting ring 13 is connected with an automobile chassis 15) through welding, the top end of the working cylinder 1 is provided with a lubricating component 14, the lubricating component 14 comprises a lubricating seat 1401, a lubricating cavity 1402, an oil absorption sponge ring 1403, an oil seepage hole 1404 and an oil inlet 1405, the working cylinder 1 is connected with the lubricating seat 1401 through welding, the lubricating cavity 1402 is arranged in the lubricating seat 1401, the oil seepage hole 1404 is arranged on the inner side of the lubricating cavity 1402, the oil absorption sponge ring 1403 is attached to one side of the oil seepage hole 1404, the oil inlet 1405 is arranged at the top end of the lubricating seat 1401, and the input ends of the semiconductor refrigeration.

In the present embodiment, the outer surface of the working cylinder 1 is provided with a wear-resistant coating (not shown in the figure); the wear-resistant coating is formed by spraying wear-resistant paint, and the wear-resistant paint comprises the following components in parts by mass: 50 parts of modified epoxy resin emulsion, 12 parts of terpene resin, 7 parts of polyurethane resin, 10 parts of nano amorphous silicon nitride powder, 13 parts of inorganic filler, 20 parts of organic solvent, 2.6 parts of film-forming assistant, 1.6 parts of flatting agent, 0.6 part of surfactant and 0.5 part of defoaming agent.

The wear-resistant coating formed by the wear-resistant coating has excellent aging resistance and wear resistance, and the adhesive force of the wear-resistant coating is greatly enhanced; the specific reasons include:

firstly, under the condition that polyethylene glycol 200 is used as a dispersing agent and benzoyl peroxide is used as an initiator, 2, 4-dihydroxy benzophenone is used for modifying epoxy resin, under the action of polyethylene glycol 200, 2, 4-dihydroxy benzophenone can be dispersed more uniformly, and under the action of nitrogen, 2, 4-dihydroxy benzophenone can be fully dispersed in epoxy resin emulsion, so that the probability of collision between the epoxy resin emulsion and the epoxy resin is increased. The active epoxy group in the epoxy resin and the hydroxyl in the 2, 4-dihydroxy benzophenone are subjected to cross-linking reaction to generate a high polymer with a three-dimensional network structure, and the 2, 4-dihydroxy benzophenone and the epoxy resin form a firmer chemical bond, so that the 2, 4-dihydroxy benzophenone can be firmly combined on the surface of the epoxy resin, the ultraviolet resistance of the coating is obviously enhanced, the aging resistance of the coating is improved, and the service life of the coating is prolonged.

Secondly, terpene resin, polyurethane resin and nano amorphous silicon nitride powder are used as raw materials for preparing the coating, wherein the terpene resin and the polyurethane resin are mixed for use, so that the wear resistance and the ultraviolet aging resistance of the coating are enhanced, and the adhesive capacity of the coating is improved to a great extent. In addition, the use of the nano amorphous silicon nitride powder not only enables the ultraviolet shielding efficiency of the prepared coating to reach more than 90 percent, but also obviously improves the wear resistance of the coating. The terpene resin, the polyurethane resin and the nano amorphous silicon nitride powder are mutually matched, so that the wear resistance and the aging resistance of the coating are greatly improved.

And thirdly, the inorganic filler and the nano amorphous silicon nitride powder are matched with each other, so that the wear resistance of the coating is enhanced, and the scratch resistance of a paint film is improved. In addition, the adhesive force, weather resistance and sterilization performance of the paint film are greatly improved, so that the service life of the prepared paint is prolonged, and the shelf life of the paint is prolonged.

Preferably, the inorganic filler is formed by mixing nano calcium carbonate, alumina and gas-phase nano silicon dioxide according to the mass ratio of 2:1: 2; the organic solvent is formed by mixing turpentine, ethyl acetate and xylene according to the mass ratio of 2:5: 1; the film-forming additive is alcohol ester twelve; the leveling agent is polyether modified polysiloxane; the surfactant is alkylphenol ethoxylates; the defoaming agent is an organic silicon defoaming agent.

The wear-resistant coating can be prepared by adopting the following preparation method:

s1, accurately weighing the components, grinding the inorganic filler to the fineness of 150 meshes, and storing for later use;

s2, adding the weighed terpene resin and polyurethane resin into a reaction kettle, heating until the terpene resin and the polyurethane resin are molten, adding the nano amorphous silicon nitride powder and the inorganic filler into the reaction kettle, and ultrasonically stirring for 45min to obtain a mixed component;

s3, transferring the mixed component obtained in the step S2 into modified epoxy resin emulsion, mixing and stirring uniformly, then adding a surfactant and a defoaming agent into a liquid phase consisting of the mixed component and the modified epoxy resin emulsion by adopting a spraying method, heating to 85 ℃ by using microwave, preserving the temperature for 40min, and simultaneously performing ultrasonic dispersion treatment to obtain a mixed component A;

and S4, adding the rest components into the mixed component A obtained in the step S3, putting the mixed component A into ultrasonic emulsification equipment, ultrasonically emulsifying for 35min, standing to a uniform and stable state, and sealing and storing to obtain the finished product of the anti-aging wear-resistant coating for the automobile.

The wear-resistant coatings prepared by the above steps (examples) and the commercially available existing automotive coatings (comparative examples) were tested for their wear-resistance, aging-resistance, corrosion-resistance, antibacterial properties, adhesion, etc., and the data are shown in the following table:

the data in the table show that the wear-resistant coating is superior to the commercially available automobile coating in wear resistance, aging resistance, corrosion resistance, bacteria resistance and adhesive force, and the wear-resistant coating provided by the invention has superior aging resistance and wear resistance.

The working principle of the damping system is as follows: the vibration generated in the driving process of the automobile is reduced through the magneto-rheological damper, when the magneto-rheological damper works, the vibration generated by the automobile can drive the inside of the electromagnetic coil 1003 to be electrified, a magnetic field is generated near the electromagnetic coil 1003, the magneto-rheological fluid can present low fluidity under the action of the magnetic field, the piston 1001 can move in the working cylinder 1 to reciprocate up and down, the vibration generated in the driving process of the automobile is eliminated, in the installation process of the magneto-rheological damper, the rubber sleeve 7 and the anti-slip pattern 9 are held by hands, the surface friction of the damper can be effectively prevented from being small, the damper can be prevented from falling off and being damaged, meanwhile, the damper is more comfortable when being installed in winter, when the damper is placed, the damper can be effectively prevented from being directly contacted with the ground, and the damper is damaged due to collision, when the magnetorheological damper works, magnetorheological fluid in the working cylinder 1 passes through the piston 1001 through the flow guide hole 1004 and enters another cavity, at the moment, the magnetorheological fluid also enters the adjusting groove 1005 and is filled in the elastic bag 1006 in the adjusting groove 1005, the elastic bag 1006 deforms after being filled with the magnetorheological fluid, the elastic bag 1006 filled with the magnetorheological fluid enters the flow guide hole 1004 through the adjusting hole 1007, the diameter of the flow guide hole 1004 is adjusted, the flow guide hole 1004 can be adjusted according to the vibration pressure of a vehicle in the working process of the magnetorheological damper, the damping effect of the magnetorheological damper is better, the applicability is stronger, when the vibration pressure generated by the vehicle in the driving process is larger than the damping force of the magnetorheological fluid under the action of a magnetic field 1201, and the vibration generated by the vehicle cannot be damped, the piston rod 11 drives the limiting disc 1202 to reciprocate up and down in the limiting tube, when the magnetorheological damper does up-and-down reciprocating motion for a long time to increase the surface friction of the limiting pipe 1201 and affect normal operation, lubricating oil in the lubricating chamber 1402 is absorbed through the oil absorption sponge ring 1403 and is coated on the surface of the limiting pipe 1201 through the oil seepage hole 1404 to reduce the friction on the surface of the limiting pipe 1201, so that the up-and-down reciprocating motion of the magnetorheological damper is smoother, the damping effect is better, when the lubricating oil in the lubricating chamber 1402 is used up, the lubricating oil is added into the lubricating seat 1401 through the oil inlet 1405, and in the working process of the magnetorheological damper, due to continuous friction, larger heat can be generated, and at the moment, low temperature is generated through the semiconductor refrigeration sheet 8, the heat generated in the working cylinder 1 is cooled by being conducted into the working cylinder 1 through the working cylinder 1, so that the phenomenon that the shock absorber bursts due to overhigh heat in the shock absorber is prevented, and the service life of the shock absorber is prolonged; meanwhile, the wear-resistant coating formed by the wear-resistant coating has excellent aging resistance and wear resistance, the adhesive force of the wear-resistant coating is greatly enhanced, and the service life of the working cylinder is effectively prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The automobile shock absorption system comprises an automobile chassis (15), wherein the bottom of the automobile chassis (15) is fixedly connected with a supporting block (1501), supporting grooves (1502) are formed in two sides of the supporting block (1501), guide rods (1503) are fixedly connected to the upper side and the lower side of the inner wall of each supporting groove (1502), a swinging rod (16) is sleeved on the surface of each guide rod (1503), and one side, far away from the supporting block (1501), of each swinging rod (16) is fixedly connected with a wheel (17); a magneto-rheological damper is arranged between the automobile chassis (15) and the swinging rod;

the magneto-rheological shock absorber comprises a working cylinder (1), and a lower mounting ring (2) is installed at the bottom end of the working cylinder (1) through welding, and is characterized in that: an oil storage chamber (3) is formed in the inner wall of the working cylinder (1), a through hole (4) is formed between the bottom end of the working cylinder (1) and the bottom end of the oil storage chamber (3), and a bottom valve seat (5) is installed at the bottom end of the interior of the working cylinder (1) in a welding mode;

a piston assembly (10) is arranged in the working cylinder (1), the piston assembly (10) comprises a piston (1001), a sealing rubber ring (1002), an electromagnetic coil (1003), a flow guide hole (1004), an adjusting groove (1005), an elastic bag (1006) and an adjusting hole (1007), a sealing rubber ring (1002) is embedded and installed on the outer side of the piston (1001), the sealing rubber ring (1002) is connected with the inner wall of the working cylinder (1) through clamping, an electromagnetic coil (1003) is embedded in the edge of the interior of the piston (1001), flow guide holes (1004) are formed in the outer side of the middle of the piston (1001) at equal intervals, the bottom end of one side of the diversion hole (1004) is provided with an adjusting groove (1005), the inner wall of the adjusting groove (1005) is adhered with an elastic bag (1006), an adjusting hole (1007) is formed between the diversion hole (1004) and the adjusting groove (1005), and a piston rod (11) is welded in the middle of the top end of the piston (1001);

2. The automotive shock absorbing system according to claim 1, wherein: reserve damper (12) are installed to piston rod (11) one end, reserve damper (12) are including spacing pipe (1201), spacing dish (1202), first damping spring (1203) and second damping spring (1204), the welding of piston rod (11) one end has spacing dish (1202), spacing dish (1202) outside has cup jointed spacing pipe (1201), first damping spring (1203) are installed on spacing dish (1202) top, second damping spring (1204) are installed to spacing dish (1202) bottom.

3. The automotive shock absorbing system according to claim 2, wherein: working cylinder (1) outside both ends all cup joint through glue and install and lay seat (6), working cylinder (1) outside middle part cup joints through glue and installs rubber sleeve (7), rubber sleeve (7) outside equidistance leaves the chisel and has anti-skidding line (9).

4. A shock absorbing system for an automobile according to claim 3, wherein: and the inner side of the rubber sleeve (7) is provided with a semiconductor refrigerating sheet (8) through a fixing screw.

5. The automotive shock absorbing system according to claim 4, wherein: installing ring (13) on spacing pipe (1201) top is installed through the welding, lubricated subassembly (14) are installed on working cylinder (1) top, lubricated subassembly (14) are including lubricated seat (1401), lubrication chamber (1402), oil absorption sponge ring (1403), oil seepage hole (1404) and oil inlet (1405), pass through welded connection between working cylinder (1) and lubricated seat (1401), lubrication chamber (1402) have been seted up to lubricated seat (1401) inside, oil seepage hole (1404) have been seted up to lubrication chamber (1402) inboard, oil seepage hole (1404) one side laminating has oil absorption sponge ring (1403), oil inlet (1405) have been seted up on lubricated seat (1401) top, the input of semiconductor refrigeration piece (8) and solenoid (1003) all with the output electric connection of power.

6. The automotive shock absorbing system according to claim 5, wherein: the limiting disc (1202) is fixedly connected with the first damping spring (1203) and the limiting disc (1202) is fixedly connected with the second damping spring (1204) through spring fixing seats.

7. The automotive shock absorbing system according to claim 6, wherein: magnetorheological fluid is filled in the working cylinder (1); the outer diameter of the limiting disc (1202) is equal to the inner diameter of the limiting pipe (1201); the outer diameter of the sealing rubber ring (1002) is equal to the inner diameter of the working cylinder (1).

8. The automotive shock absorbing system according to claim 7, wherein: the damping force of the first damping spring (1203) and the second damping spring (1204) is larger than the damping force of the magnetorheological fluid under the condition of a magnetic field.

9. The vehicular shock absorbing system according to any one of claims 1 to 8, wherein: the inorganic filler is formed by mixing nano calcium carbonate, alumina and gas-phase nano silicon dioxide according to the mass ratio of 2:1: 2; the organic solvent is formed by mixing turpentine, ethyl acetate and xylene according to the mass ratio of 2:5: 1; the film-forming additive is alcohol ester twelve; the leveling agent is polyether modified polysiloxane; the surfactant is alkylphenol ethoxylates; the defoaming agent is an organic silicon defoaming agent.